DUFFIELD DAVID A
SEC Form 4 insider trading activity
DUFFIELD DAVID A has filed 42 SEC Form 4 filings (315 transaction rows) across 1 company, with disclosures dating back to 2025. 35 of those filings fall inside the rolling window. Most recent filing: Oct 13, 2026.
On the most recent filing, DUFFIELD DAVID A is listed as 10% Owner at Workday, Inc. Inside the rolling window, DUFFIELD DAVID A reported no open-market purchases and 35 open-market sales totaling $557.0M in WDAY. The largest disclosed transaction in the window is a sale of 99,613 WDAY shares on Sep 23, 2026, worth $19.1M.
Companies traded
Other insiders at WDAY
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$557.0M
reported sales (SEC code S)
Companies
1
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| WDAY | 10% Owner | Sale | 99,835 | $18.7M | Oct 13 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 99,228 | $18.6M | Oct 7 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 98,446 | $18.4M | Oct 5 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 98,971 | $18.7M | Sep 30 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 99,613 | $19.1M | Sep 25 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 94,089 | $18.3M | Sep 21 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 96,545 | $18.6M | Sep 17 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 100,780 | $18.7M | Sep 14 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 90,615 | $18.0M | Sep 9 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 94,961 | $18.9M | Sep 3 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $14.7M | Jul 13 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $14.5M | Jul 7 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $13.1M | Jul 1 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $12.4M | Jun 29 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $12.3M | Jun 24 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $13.4M | Jun 18 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $13.8M | Jun 15 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $14.9M | Jun 11 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $16.1M | Jun 8 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $16.8M | Jun 3 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $12.1M | Apr 13 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $13.9M | Apr 7 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $13.9M | Apr 2 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $13.8M | Mar 30 | SEC ↗ | |
| WDAY | 10% Owner | Sale | 107,500 | $14.7M | Mar 25 | SEC ↗ |
Earlier trades
Open-market purchases and sales filed before the rolling 365-day window, kept from the original Form 4 filings.
| Date | Ticker | Type | Value |
|---|---|---|---|
| Oct 8, 2025 | WDAY | Sale | $2.4M |
| Oct 8, 2025 | WDAY | Sale | $7.3M |
| Oct 8, 2025 | WDAY | Sale | $2.0M |
| Oct 8, 2025 | WDAY | Sale | $3.1M |
| Oct 8, 2025 | WDAY | Sale | $2.2M |
| Oct 8, 2025 | WDAY | Sale | $793K |
| Oct 1, 2025 | WDAY | Sale | $145K |
| Oct 1, 2025 | WDAY | Sale | $1.8M |
| Oct 1, 2025 | WDAY | Sale | $1.5M |
| Oct 1, 2025 | WDAY | Sale | $1.3M |
| Oct 1, 2025 | WDAY | Sale | $525K |
| Oct 1, 2025 | WDAY | Sale | $1.3M |
| Oct 1, 2025 | WDAY | Sale | $236K |
| Oct 1, 2025 | WDAY | Sale | $258K |
| Oct 1, 2025 | WDAY | Sale | $1.0M |
| Oct 1, 2025 | WDAY | Sale | $5.0M |
| Oct 1, 2025 | WDAY | Sale | $4.1M |
| Sep 23, 2025 | WDAY | Sale | $49K |
| Sep 23, 2025 | WDAY | Sale | $1.4M |
| Sep 23, 2025 | WDAY | Sale | $3.2M |
| Sep 23, 2025 | WDAY | Sale | $2.7M |
| Sep 23, 2025 | WDAY | Sale | $3.7M |
| Sep 23, 2025 | WDAY | Sale | $6.4M |
| Sep 16, 2025 | WDAY | Sale | $559K |
| Sep 16, 2025 | WDAY | Sale | $447K |
Frequently asked questions
How many SEC Form 4 filings has DUFFIELD DAVID A made?
DUFFIELD DAVID A has filed 42 SEC Form 4 filings (315 transaction rows) across 1 company since 2025.
Which companies does DUFFIELD DAVID A trade?
DUFFIELD DAVID A has filed SEC Form 4 disclosures for 1 company, including WDAY.
When was DUFFIELD DAVID A's most recent SEC Form 4 filing?
DUFFIELD DAVID A's most recent SEC Form 4 filing on Tracefour is dated Oct 13, 2026.
What is DUFFIELD DAVID A's total buy and sell value in the current window?
Inside the rolling retention window, DUFFIELD DAVID A bought $0 and sold $557.0M based on SEC Form 4 filings.
What was DUFFIELD DAVID A's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 99,613 WDAY shares on 2026-09-23, worth $19.1M, per SEC Form 4 filings.